Security system housing and siren



FIG. 1 is a front plan view of the security system housing and siren showing my new design;

FIG. 2 is a back plan view thereof;

FIG. 3 is the top plan view thereof;

FIG. 4 is the bottom plan view thereof;

FIG. 5 is the left side plan view thereof;

FIG. 6 is the right side plan view thereof; and,

FIG. 7 is the elevational view thereof. 

The ornamental design of security system housing and siren, as shown and described. 